I have a rheem unit about 10 years old. last week i got up to a cool house. it was about 60 when i had it set on 68. the fan wouldn't come on. then about 15 minutes later it did come on and was making a weird sound. i assumed bearings were going out so i got a new fan motor. the motor i removed was a single speed...the universal one i replaced it with was 3 speed. i went with middle speed...anyway, when i threw the breaker it came on just as it should. but instead of running until the temp was reached on the thermostat, it shut off after about 2 minutes. and there was a smell...it reminded me of the smell you get when it first comes on after being not used for months..i pulled the fan again and found a oiece of wire coating that had dropped into the elements so i removed it. it was charred so i figured that was the source. but it smells everytime now. .it will come on from time to time, but it won't get the temp up before it shuts off....the heating elements are working, it's the fan motor not wanting to run that's the problem....any ideas?

My dad installed the HVAC in our new home, all metal construction, spray in insulation... Details of system: Goodman heat pump - 14 SEER 2.5 ton, SSZ140301 air handler - 3.5 ton, AVPTC426014 electric heat kit - HKR-15C Big Blue humidity thermostat Ok, here goes- in the summer there is no issue, but when the temps drop, our windows get an incredible amount of condensation. I tried to inform my dad that it is because all new homes need some type of system to remove the humidity from the home. He will not listen, saying I will look into it and that he needs to read up on it more. It is a big issue for me because the sheet rock is beginning to pull up and mold is starting to grow. Other homes that I know of that were built similar to ours, had an ERV intalled and they have no issues with condensation. I don't want to have to replace the frames inside the house because of wet sheetrock. Is an ERV the solution? Also, our air handler is flashing 11 green flashes and the red light stays on while in AUTO/HEAT. Goodman will not advise me because I did not do the installation and my stubborn dad will not call either. In below 30 degree temps, the system will run constantly, and sometimes even shows on therm system on +2. Is the issue that the condensing unit and air handler are not size matched? Or a problem with the board? I would appreciate any advice, thanks!